8.5 Limitations of quantitative research

There are several problems that can arise in experimentation that include subject bias, measurement changes, expense, time taken and design competence. Central location interviewing is unsuitable for certain products and will be limited to those people available at specific times. Panelists are different: they will be conditioned; respondent fatigue may cause stock responses and panel erosion. In the omnibus one set of questions might affect other sets. The client does not know what other questions are  they are confidential, so it is impossible to judge their effect. In most quantitative work data will need weighting - that procedure will also impact results. http://www.oxfordtextbooks.co.uk/orc/...

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